com.bazaarvoice.jolt

Class JsonUtils

java.lang.Object

com.bazaarvoice.jolt.JsonUtils

public class JsonUtils
extends Object

Static method convenience wrappers for a JsonUtil configured with a minimal ObjectMapper. The ObjectMapper use is configured to : Allow comments in the JSON strings, Hydrates all JSON Maps into LinkedHashMaps.

Constructor Summary

Constructors

Constructor and Description
JsonUtils()

Method Summary

Modifier and Type	Method and Description
static List<Object>	classpathToList(String classPath)
static Map<String,Object>	classpathToMap(String classPath)
static Object	classpathToObject(String classPath)
static <T> T	classpathToType(String classPath, Class<T> aClass)
static <T> T	classpathToType(String classPath, com.fasterxml.jackson.core.type.TypeReference<T> typeRef)
static Object	cloneJson(Object obj) Makes a deep copy of a Map object by converting it to a String and then back onto stock JSON objects.
static JsonUtil	customJsonUtil(com.fasterxml.jackson.databind.ObjectMapper mapper) Construct a JsonUtil with a Jackson ObjectMapper that has been preconfigured with custom Modules or Mixins.
static List<Object>	filepathToList(String filePath)
static Map<String,Object>	filepathToMap(String filePath)
static Object	filepathToObject(String filePath)
static <T> T	fileToType(String filePath, Class<T> aClass)
static <T> T	fileToType(String filePath, com.fasterxml.jackson.core.type.TypeReference<T> typeRef)
static JsonUtil	getDefaultJsonUtil()
static Map<String,Object>	javason(String javason) Utility for test classes, so that they can inline json in a test class.
static <T> T	jsonTo(InputStream in, com.fasterxml.jackson.core.type.TypeReference<T> typeRef) Deprecated.
static <T> T	jsonTo(String json, com.fasterxml.jackson.core.type.TypeReference<T> typeRef) Deprecated.
static List<Object>	jsonToList(InputStream in)
static List<Object>	jsonToList(String json)
static List<Object>	jsonToList(String json, String charset)
static Map<String,Object>	jsonToMap(InputStream in)
static Map<String,Object>	jsonToMap(String json)
static Map<String,Object>	jsonToMap(String json, String charset)
static Object	jsonToObject(InputStream in)
static Object	jsonToObject(String json)
static Object	jsonToObject(String json, String charset)
static <T> T	navigate(Object source, Object... paths) Deprecated.
static void	removeRecursive(Object json, String keyToRemove) Deprecated.
static <T> T	streamToType(InputStream in, Class<T> aClass)
static <T> T	streamToType(InputStream in, com.fasterxml.jackson.core.type.TypeReference<T> typeRef)
static <T> T	stringToType(String json, Class<T> aClass)
static <T> T	stringToType(String json, com.fasterxml.jackson.core.type.TypeReference<T> typeRef)
static String	toJsonString(Object obj)
static String	toPrettyJsonString(Object obj)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonUtils

public JsonUtils()

Method Detail

customJsonUtil

public static JsonUtil customJsonUtil(com.fasterxml.jackson.databind.ObjectMapper mapper)

Construct a JsonUtil with a Jackson ObjectMapper that has been preconfigured with custom Modules or Mixins.

removeRecursive

@Deprecated
public static void removeRecursive(Object json,
                                               String keyToRemove)

Deprecated.

Removes a key recursively from anywhere in a JSON document. NOTE: mutates its input. Deprecated: use JoltUtils instead

Parameters:

json - the Jackson Object version of the JSON document (contents changed by this call)

keyToRemove - the key to remove from the document

javason

public static Map<String,Object> javason(String javason)

Utility for test classes, so that they can inline json in a test class. Does a character level replacement of apostrophe (') with double quote ("). This means you can express a snippit of JSON without having to forward slash escape everything. This is character based, so don't have any apostrophes (') in your test data.

Parameters:

javason - JSON-ish string you want to turn into Maps-of-Maps

Returns:

Maps-of-Maps

getDefaultJsonUtil

public static JsonUtil getDefaultJsonUtil()

jsonToObject

public static Object jsonToObject(String json)

jsonToObject

public static Object jsonToObject(String json,
                                  String charset)

jsonToObject

public static Object jsonToObject(InputStream in)

jsonToMap

public static Map<String,Object> jsonToMap(String json)

jsonToMap

public static Map<String,Object> jsonToMap(String json,
                                           String charset)

jsonToMap

public static Map<String,Object> jsonToMap(InputStream in)

jsonToList

public static List<Object> jsonToList(String json)

jsonToList

public static List<Object> jsonToList(String json,
                                      String charset)

jsonToList

public static List<Object> jsonToList(InputStream in)

filepathToObject

public static Object filepathToObject(String filePath)

filepathToMap

public static Map<String,Object> filepathToMap(String filePath)

filepathToList

public static List<Object> filepathToList(String filePath)

classpathToObject

public static Object classpathToObject(String classPath)

classpathToMap

public static Map<String,Object> classpathToMap(String classPath)

classpathToList

public static List<Object> classpathToList(String classPath)

classpathToType

public static <T> T classpathToType(String classPath,
                                    com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

classpathToType

public static <T> T classpathToType(String classPath,
                                    Class<T> aClass)

stringToType

public static <T> T stringToType(String json,
                                 com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

stringToType

public static <T> T stringToType(String json,
                                 Class<T> aClass)

fileToType

public static <T> T fileToType(String filePath,
                               com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

fileToType

public static <T> T fileToType(String filePath,
                               Class<T> aClass)

streamToType

public static <T> T streamToType(InputStream in,
                                 com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

streamToType

public static <T> T streamToType(InputStream in,
                                 Class<T> aClass)

jsonTo

@Deprecated
public static <T> T jsonTo(String json,
                                       com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

Deprecated.

Use the stringToType method instead.

jsonTo

@Deprecated
public static <T> T jsonTo(InputStream in,
                                       com.fasterxml.jackson.core.type.TypeReference<T> typeRef)

Deprecated.

Use the streamToType method instead.

toJsonString

public static String toJsonString(Object obj)

toPrettyJsonString

public static String toPrettyJsonString(Object obj)

cloneJson

public static Object cloneJson(Object obj)

Makes a deep copy of a Map object by converting it to a String and then back onto stock JSON objects.

Parameters:

obj - object tree to copy

Returns:

deep copy of the incoming obj

navigate

@Deprecated
public static <T> T navigate(Object source,
                                         Object... paths)
                                  throws NullPointerException,
                                         UnsupportedOperationException

Deprecated.

Navigate inside a json object in quick and dirty way. Deprecated: use JoltUtils instead

Parameters:

source - the source json object

paths - the paths array to travel

Returns:

the object of Type at final destination

Throws:

NullPointerException - if the source is null

UnsupportedOperationException - if the source is not Map or List